<DeviceRequest xmlns="http://hl7.org/fhir"><id value="right-lens"/><identifier><system value="http://www.happysight.com/prescription"/><value value="15013R"/></identifier><groupIdentifier><system value="http://acme.org"/><value value="15013"/></groupIdentifier><status value="completed"/><intent value="original-order"/><productCodeableConcept><coding><system value="http://terminology.hl7.org/CodeSystem/ex-visionprescriptionproduct"/><code value="lens"/></coding></productCodeableConcept><parameter><code><coding><system value="http://loinc.org"/><code value="28826-6"/><display value="Right glasses lens prescription Sphere far"/></coding><text value="sphere, right lens"/></code><valueQuantity><value value="-2.00"/><unit value="Diopter"/><system value="http://unitsofmeasure.org"/><code value="[diop]"/></valueQuantity></parameter><parameter><code><coding><system value="http://loinc.org"/><code value="28829-0"/><display value="Right glasses lens prescription Prism base direction"/></coding><text value="prisms, right lens"/></code><valueQuantity><value value="-2.00"/><unit value="Diopter"/><system value="http://unitsofmeasure.org"/><code value="[diop]"/></valueQuantity></parameter><parameter><code><coding><system value="http://loinc.org"/><code value="28810-0"/><display value="Right corrective lens Add 1 by Lensmeter"/></coding><text value="add, right lens"/></code><valueQuantity><value value="2.00"/><unit value="Diopter"/><system value="http://unitsofmeasure.org"/><code value="[diop]"/></valueQuantity></parameter><subject><reference value="Patient/example"/></subject><occurrenceDateTime value="2014-06-15"/><requester><reference value="Practitioner/example"/></requester></DeviceRequest>